Cold 'killing off' Florida coral

Freezing winter temperatures devastate North American coral reefs.

    Freezing winter temperatures in North America have had a devastating effect on Floridas coral reefs.

    Water temperatures need to be just right for coral to survive, but last winter was lethal, with temperatures dropping six degrees lower than average.

    Some coral areas were fortunate enough to be protected by the Florida Current - a warm water mass that blocks extreme temperature variations but much of the reef fell victim to the sharp drop in temperature.

    Al Jazeera's Cath Turner has this report.

    SOURCE: Al Jazeera


    YOU MIGHT ALSO LIKE

    How different voting systems work around the world

    How different voting systems work around the world

    Nearly two billion voters in 52 countries around the world will head to the polls this year to elect their leaders.

    How Moscow lost Riyadh in 1938

    How Moscow lost Riyadh in 1938

    Russian-Saudi relations could be very different today, if Stalin hadn't killed the Soviet ambassador to Saudi Arabia.

    The great plunder: Nepal's stolen treasures

    The great plunder: Nepal's stolen treasures

    How the art world's hunger for ancient artefacts is destroying a centuries-old culture. A journey across the Himalayas.